Robert Half International (RHI) 10-Q 6 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	RHI
Entity Registrant Name	HALF ROBERT INTERNATIONAL INC /DE/
Entity Central Index Key	0000315213
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		118,557,548

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Position (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 269,645	$ 276,579
Accounts receivable, less allowances of $26,501 and $27,678	826,366	794,446
Other current assets	436,006	402,585
Total current assets	1,532,017	1,473,610
Goodwill	210,127	209,958
Other intangible assets, net	2,773	3,149
Property and equipment, net	125,522	125,176
Right-of-use assets	248,691
Noncurrent deferred income taxes	85,477	91,204
Total assets	2,204,607	1,903,097
LIABILITIES
Accounts payable and accrued expenses	131,722	168,031
Accrued payroll and benefit costs	670,345	638,769
Income taxes payable	27,394	12,536
Current portion of notes payable and other indebtedness	204	200
Current operating lease liabilities	71,065
Total current liabilities	900,730	819,536
Notes payable and other indebtedness, less current portion	404	457
Noncurrent operating lease liabilities	205,613
Other liabilities	20,831	19,906
Total liabilities	1,127,578	839,899
Commitments and Contingencies (Note H)
STOCKHOLDERS’ EQUITY
Preferred stock, $.001 par value authorized 5,000,000 shares; issued and outstanding zero shares	0	0
Common stock, $.001 par value authorized 260,000,000 shares; issued and outstanding 118,320,896 shares and 119,078,491 shares	118	119
Capital surplus	1,090,432	1,079,188
Accumulated other comprehensive loss	(18,006)	(16,109)
Retained earnings	4,485	0
Total stockholders’ equity	1,077,029	1,063,198
Total liabilities and stockholders’ equity	$ 2,204,607	$ 1,903,097

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 26,501	$ 27,678
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in usd per shares)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	260,000,000	260,000,000
Common stock, issued (in shares)	118,320,896	119,078,491
Common stock, outstanding (in shares)	118,320,896	119,078,491

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net service revenues	$ 1,468,530	$ 1,395,333
Direct costs of services, consisting of payroll, payroll taxes, benefit costs and reimbursable expenses	860,942	822,967
Gross margin	607,588	572,366
Selling, general and administrative expenses	461,359	437,999
Amortization of intangible assets	342	463
Interest income, net	(1,496)	(735)
Income before income taxes	147,383	134,639
Provision for income taxes	37,585	38,472
Net income	$ 109,798	$ 96,167
Net income per share:
Basic (in usd per share)	$ 0.94	$ 0.79
Diluted (in usd per share)	$ 0.93	$ 0.78
Shares:
Basic (in shares)	117,068	121,934
Diluted (in shares)	117,966	122,887
Cash dividends declared per share (in usd per share)	$ 0.31	$ 0.28

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
COMPREHENSIVE INCOME:
Net income	$ 109,798	$ 96,167
Foreign currency translation adjustments, net of tax	(1,897)	5,508
Total comprehensive income	$ 107,901	$ 101,675

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	COMMON STOCK	CAPITAL SURPLUS	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	RETAINED EARNINGS
Balance at beginning of period (in shares) at Dec. 31, 2017		124,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net issuances of restricted stock (in shares)		514
Repurchases of common stock (in shares)		(1,212)
Balance at end of period (in shares) at Mar. 31, 2018		123,563
Balance at beginning of period at Dec. 31, 2017		$ 124	$ 1,064,601	$ 3,507	$ 37,033
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net issuances of restricted stock		1	(1)
Net income	$ 96,167				96,167
Repurchases of common stock		(1)			(68,488)
Stock-based compensation expense			10,556
Foreign currency translation adjustments, net of tax	5,508			5,508
Cash dividends ($.31 per share and $.28 per share)					(34,210)
Balance at end of period at Mar. 31, 2018		$ 124	1,075,156	9,015	30,502
Balance at beginning of period (in shares) at Dec. 31, 2018		119,078
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net issuances of restricted stock (in shares)		281
Repurchases of common stock (in shares)		(1,038)
Balance at end of period (in shares) at Mar. 31, 2019		118,321
Balance at beginning of period at Dec. 31, 2018	1,063,198	$ 119	1,079,188	(16,109)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net issuances of restricted stock		0	0
Net income	109,798				109,798
Repurchases of common stock		(1)			(68,315)
Stock-based compensation expense			11,244
Foreign currency translation adjustments, net of tax	(1,897)			(1,897)
Cash dividends ($.31 per share and $.28 per share)					(36,998)
Balance at end of period at Mar. 31, 2019	$ 1,077,029	$ 118	$ 1,090,432	$ (18,006)	$ 4,485

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
RETAINED EARNINGS
Cash dividends, per share (in usd per share)	$ 0.31	$ 0.28

Condensed Consolidated Statem_7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 109,798	$ 96,167
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	342	463
Depreciation expense	15,652	16,253
Stock-based compensation expense—restricted stock and stock units	11,244	10,556
Deferred income taxes	5,736	1,695
Provision for doubtful accounts	2,325	1,778
Changes in assets and liabilities:
Increase in accounts receivable	(35,294)	(49,794)
Increase in accounts payable, accrued expenses, accrued payroll and benefit costs	1,398	13,527
Increase in income taxes payable	17,470	27,068
Change in other assets, net of change in other liabilities	(1,592)	(1,495)
Net cash flows provided by operating activities	127,079	116,218
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(12,670)	(7,965)
Payments to trusts for employee deferred compensation plans	(10,410)	(10,585)
Net cash flows used in investing activities	(23,080)	(18,550)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchases of common stock	(72,343)	(68,489)
Cash dividends paid	(37,887)	(34,919)
Payments for notes payable and other indebtedness	(49)	(44)
Net cash flows used in financing activities	(110,279)	(103,452)
Effect of exchange rate changes on cash and cash equivalents	(654)	3,018
Net decrease in cash and cash equivalents	(6,934)	(2,766)
Cash and cash equivalents at beginning of period	276,579	294,753
Cash and cash equivalents at end of period	269,645	291,987
Non-cash items:
Stock repurchases awaiting settlement	$ 7,332	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations . Robert Half International Inc. (the “Company”) provides specialized staffing and risk consulting services through such divisions as Accountemps ® , Robert Half ® Finance & Accounting , OfficeTeam ® , Robert Half ® Technology , Robert Half ® Management Resources , Robert Half ® Legal , The Creative Group ® , and Protiviti ® . The Company, through its Accountemps , Robert Half Finance & Accounting , and Robert Half Management Resources divisions, is a specialized provider of temporary, full-time, and senior-level project professionals in the fields of accounting and finance. OfficeTeam specializes in highly skilled temporary administrative support professionals. Robert Half Technology provides project and full-time technology professionals. Robert Half Legal provides temporary, project, and full-time staffing of lawyers, paralegals and legal support personnel. The Creative Group provides creative, digital, marketing, advertising and public relations professionals. Protiviti is a global consulting firm that helps companies solve problems in finance, technology, operations, data, analytics, governance, risk and internal audit, and is a wholly-owned subsidiary of the Company. Revenues are predominantly derived from specialized staffing services. The Company operates in North America, South America, Europe, Asia and Australia. The Company is a Delaware corporation. Basis of Presentation. The unaudited Condensed Consolidated Financial Statements (“Financial Statements”) of the Company are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”). The comparative year-end Condensed Consolidated Statement of Financial Position data presented was derived from audited financial statements. In the opinion of management, all adjustments (consisting of only normal recurring adjustments) necessary for a fair statement of the financial position and results of operations for the periods presented have been included. These Financial Statements should be read in conjunction with the audited Consolidated Financial Statements of the Company for the year ended December 31, 2018 , included in its Annual Report on Form 10-K. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for a full year. Principles of Consolidation. The Financial Statements include the accounts of the Company and its subsidiaries, all of which are wholly-owned. All intercompany balances have been eliminated. Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. As of March 31, 2019 , such estimates also include allowances for uncollectible accounts receivable, sales adjustments and allowances, workers’ compensation losses, income and other taxes, and assumptions used in the Company’s goodwill impairment assessment and in the valuation of stock grants subject to market conditions. Actual results and outcomes may differ from management's estimates and assumptions. Advertising Costs. The Company expenses all advertising costs as incurred. Advertising costs for the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Advertising costs $ 12,837 $ 13,081 Leases. The Company determines if a contractual arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current operating lease liabilities, and noncurrent operating lease liabilities on the Company’s Condensed Consolidated Statement of Financial Position. The Company does not currently have finance leases. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. The lease payments included in the present value are fixed lease payments and index-based variable lease payments. As most of the Company’s leases do not provide an implicit rate, the Company estimates its collateralized incremental borrowing rate, based on information available at the commencement date, in determining the present value of lease payments. The Company applies the portfolio approach in applying discount rates to its classes of leases. The operating lease ROU assets include any payments made before the commencement date and exclude lease incentives. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company does not currently have subleases. The Company does not currently have residual value guarantees or restrictive covenants in its leases. The Company has contracts with lease and non-lease components, which are accounted for on a combined basis. Internal-use Software. The Company capitalizes direct costs incurred in the development of internal-use software. Implementation costs incurred in hosting arrangements are capitalized and reported as a component of other current assets. All other internal-use software development costs are capitalized and reported as a component of computer software within property and equipment. Internal-use software development costs capitalized for the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Internal-use software development costs $ 5,036 $ 455

New Accounting Pronouncements

New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2019
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements Recently Adopted Accounting Pronouncements Lease Accounting . In February 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance which changes financial reporting as it relates to leasing transactions. Under the new guidance, lessees are required to recognize a lease liability, measured on a discounted basis; and a right-of-use asset, for the lease term. The Company adopted this guidance as of January 1, 2019, using the transition method that allowed it to initially apply the guidance as of January 1, 2019. The Company elected the package of practical expedients available under the new standard, which allowed the Company to forgo a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of this guidance had a material impact on the Company’s Condensed Consolidated Statement of Financial Position beginning January 1, 2019. Prior periods were not restated. See Note F for further discussion of leases. Internal-use Software — Cloud Computing. In August 2018, the FASB issued authoritative guidance which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. Entities are required to present the expense related to capitalized implementation costs in the same line item in the statement of operations as the fees associated with the hosting elements of the arrangement and classify the payments for the capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. Entities are also required to present the capitalized implementation costs in the statement of financial position in the same line item that a prepayment of the fees of the associated hosting arrangement would be presented. The new guidance is effective for annual and interim periods beginning after December 15, 2019, although early adoption is permitted. The Company has adopted the new guidance prospectively as of January 1, 2019, and the impact of adoption was not material to its financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted Current Expected Credit Losses Model. In June 2016, the FASB issued authoritative guidance amending how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance requires the application of a current expected credit loss model, which is a new impairment model based on expected losses. The new guidance is effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for annual reporting periods beginning after December 15, 2018. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements and related disclosures. Simplifying the Test for Goodwill Impairment.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Revenues from contracts with customers are generated in three segments: temporary and consultant staffing, permanent placement staffing, and risk consulting and internal audit services. Revenues are recognized when promised goods or services are delivered to customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Net service revenues, as presented in the unaudited Condensed Consolidated Statements of Operations, represent services rendered to customers less variable consideration, such as sales adjustments and allowances. Reimbursements, including those related to travel and out-of-pocket expenses, are recorded on a gross basis and included in net service revenues, with equivalent amounts of reimbursable expenses included in direct costs of services. Temporary and consultant staffing revenues. Temporary and consultant staffing revenues from contracts with customers are recognized in the amount to which the Company has a right to invoice, when the services are rendered by the Company’s temporary employees. The Company records temporary and consultant staffing revenue on a gross basis as a principal versus on a net basis as an agent in the presentation of revenues and expenses. The Company has concluded that gross reporting is appropriate because the Company (i) has the risk of identifying and hiring qualified employees, (ii) has the discretion to select the employees and establish their price and duties and (iii) bears the risk for services that are not fully paid for by customers. Fees paid to Time Management or Vendor Management service providers selected by clients are recorded as a reduction of revenues, as the Company is not the primary obligor with respect to those services. The substantial majority of employees placed on temporary assignment by the Company are the Company’s legal employees while they are working on assignments. The Company pays all related costs of employment, including workers’ compensation insurance, state and federal unemployment taxes, social security and certain fringe benefits. The Company assumes the risk of acceptability of its employees to its customers. Permanent placement staffing revenues. Permanent placement staffing revenues from contracts with customers are primarily recognized when employment candidates accept offers of permanent employment. The Company has a substantial history of estimating the financial impact of permanent placement candidates who do not remain with its clients through the 90 -day guarantee period. These amounts are established based primarily on historical data and are recorded as liabilities. Fees to clients are generally calculated as a percentage of the new employee’s annual compensation. No fees for permanent placement services are charged to employment candidates. Risk consulting and internal audit services revenues. Risk consulting and internal audit services generally contain one or more performance obligation(s) which are satisfied over a period of time. Revenues are recognized over time as the performance obligations are satisfied, because the services provided do not have any alternative use to the Company, and contracts generally include language giving the Company an enforceable right to payment for services provided to date. Revenue is measured using cost incurred relative to total estimated cost for the engagement to measure progress towards satisfying the Company's performance obligations. Cost incurred represents work performed and thereby best depicts the transfer of control to the customer. The following table presents the Company's revenues disaggregated by line of business (in thousands): Three Months Ended 2019 2018 Accountemps $ 483,473 $ 471,589 OfficeTeam 252,035 261,152 Robert Half Technology 171,928 160,062 Robert Half Management Resources 177,191 173,485 Temporary and consulting staffing 1,084,627 1,066,288 Permanent placement staffing 131,562 121,400 Risk consulting and internal audit services 252,341 207,645 Net service revenues $ 1,468,530 $ 1,395,333 Payment terms in the Company's contracts vary by the type and location of the Company's customer and the services offered. The term between invoicing and when payment is due is not significant. Contracts with multiple performance obligations are recognized as performance obligations are delivered, and contract value is allocated based on relative stand-alone selling values of the services and products in the arrangement. As of March 31, 2019 , aggregate transaction price allocated to the performance obligations that are unsatisfied for contracts with an expected duration of greater than one year was $84.8 million . Of this amount, $80.4 million is expected to be recognized within the next twelve months . Contract liabilities are recorded when cash payments are received or due in advance of performance and are reflected in Accounts payable and accrued expenses on the unaudited Condensed Consolidated Statement of Financial Position. The following table sets forth the activity in contract liabilities from December 31, 2018, through March 31, 2019 (in thousands): Contract Liabilities Balance as of December 31, 2018 $ 12,997 Payments in advance of satisfaction of performance obligations 4,604 Revenue recognized (4,374 ) Other, including translation adjustments (2,423 ) Balance as of March 31, 2019 $ 10,804

Other Current Assets

Other Current Assets	3 Months Ended
	Mar. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Current Assets	Other Current Assets Other current assets consisted of the following (in thousands): March 31, December 31, 2018 Deposits in trusts for employee deferred compensation plans $ 345,844 $ 311,708 Other 90,162 90,877 Other current assets $ 436,006 $ 402,585

Property and Equipment, Net

Property and Equipment, Net	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, Net Property and equipment consisted of the following (in thousands): March 31, December 31, 2018 Computer hardware $ 180,456 $ 177,237 Computer software 379,415 378,734 Furniture and equipment 109,060 107,421 Leasehold improvements 161,685 160,521 Other 11,155 10,319 Property and equipment, cost 841,771 834,232 Accumulated depreciation (716,249 ) (709,056 ) Property and equipment, net $ 125,522 $ 125,176

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Leases The Company has operating leases for corporate and field offices, and certain equipment. The Company’s leases have remaining lease terms of 1 year to 10 years , some of which include options to extend the leases for up to 5 years , and some of which include options to terminate the leases within 1 year . Operating lease expenses for the 3 months ended March 31, 2019, were $16.6 million . Supplemental cash flow information related to leases consisted of the following (in thousands): Three Months Ended March 31, 2019 Cash paid for operating lease liabilities $ 16,728 Right-of-use assets obtained in exchange for new operating lease liabilities $ 10,517 Supplemental balance sheet information related to leases consisted of the following: March 31, Weighted average remaining lease term for operating leases 3.2 years Weighted average discount rate for operating leases 3.4 % Future minimum lease payments under non-cancellable leases as of March 31, 2019 , were as follows (in thousands): 2019 (excluding the three months ended March 31, 2019) $ 58,082 2020 71,827 2021 55,609 2022 42,738 2023 35,777 Thereafter 52,794 Less: Imputed interest (40,149 ) Present value of operating lease liabilities (a) $ 276,678 (a) Includes current portion of $71.1 million

Accrued Payroll and Benefit Cos

Accrued Payroll and Benefit Costs	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Payroll and Benefit Costs	Accrued Payroll and Benefit Costs Accrued payroll and benefit costs consisted of the following (in thousands): March 31, December 31, 2018 Payroll and benefits $ 261,932 $ 263,072 Employee deferred compensation plans 352,161 333,528 Workers’ compensation 18,847 18,251 Payroll taxes 37,405 23,918 Accrued payroll and benefit costs $ 670,345 $ 638,769 Included in employee deferred compensation plans is the following (in thousands): March 31, December 31, 2018 Deferred compensation plan and other benefits related to the Company’s Chief Executive Officer $ 89,434 $ 89,212

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies On March 23, 2015, Plaintiff Jessica Gentry, on her own behalf and on behalf of a putative class of allegedly similarly situated individuals, filed a complaint against the Company in the Superior Court of California, San Francisco County, which was subsequently amended on October 23, 2015. The complaint alleges that a putative class of current and former employees of the Company working in California since March 13, 2010 were denied compensation for the time they spent interviewing “for temporary and permanent employment opportunities” as well as performing activities related to the interview process. Gentry seeks recovery on her own behalf and on behalf of the putative class in an unspecified amount for this allegedly unpaid compensation. Gentry also seeks recovery of an unspecified amount for the alleged failure of the Company to provide her and the putative class with accurate wage statements. Gentry also seeks an unspecified amount of other damages, attorneys’ fees, and statutory penalties, including penalties for allegedly not paying all wages due upon separation to former employees and statutory penalties on behalf of herself and other allegedly “aggrieved employees” as defined by California’s Labor Code Private Attorney General Act (“PAGA”). On January 4, 2016, the Court denied a motion by the Company to compel all of Gentry’s claims, except the PAGA claim, to individual arbitration. At this stage of the litigation, it is not feasible to predict the outcome of or a range of loss, should a loss occur, from this proceeding and, accordingly, no amounts have been provided in the Company’s Financial Statements. The Company believes it has meritorious defenses to the allegations and the Company intends to continue to vigorously defend against the litigation. On April 6, 2018, Plaintiff Shari Dorff, on her own behalf and on behalf of a putative class of allegedly similarly situated individuals, filed a complaint against the Company in the Superior Court of California, County of Los Angeles. In addition to certain claims individual to Plaintiff Dorff, the complaint alleges that salaried recruiters based in California have been misclassified as exempt employees and seeks an unspecified amount for: unpaid wages resulting from such alleged misclassification; alleged failure to provide a reasonable opportunity to take meal periods and rest breaks; alleged failure to pay wages on a timely basis both during employment and upon separation; alleged failure to comply with California requirements regarding wage statements and record-keeping; and alleged improper denial of expense reimbursement. Plaintiff Dorff also seeks an unspecified amount of other damages, attorneys’ fees, and penalties, including but not limited to statutory penalties on behalf of herself and other allegedly “aggrieved employees” as defined by PAGA. At this stage of the litigation, it is not feasible to predict the outcome of or a range of loss, should a loss occur, from this proceeding and, accordingly, no amounts have been provided in the Company’s Financial Statements. The Company believes it has meritorious defenses to the allegations and the Company intends to continue to vigorously defend against the litigation. The Company is involved in a number of other lawsuits arising in the ordinary course of business. While management does not expect any of these other matters to have a material adverse effect on the Company’s results of operations, financial position or cash flows, litigation is subject to certain inherent uncertainties. Legal costs associated with the resolution of claims, lawsuits and other contingencies are expensed as incurred. In March 2019, the Company entered into an uncommitted credit facility (the “Credit Agreement”) of up to $100 million . The Company may request borrowings under the Credit Agreement that are denominated in U.S. dollars and each request is subject to approval by the lender. The Company must repay the aggregate principal amount of loans outstanding under the Credit Agreement on the termination date of each borrowing. Borrowings under the Credit Agreement will bear interest in accordance with the terms of the borrowing, which typically will be calculated according to the London Interbank Offered Rate plus an applicable margin. There were no

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Stock Repurchase Program. As of March 31, 2019 , the Company is authorized to repurchase, from time to time, up to 5.9 million additional shares of the Company’s common stock on the open market or in privately negotiated transactions, depending on market conditions. The number and the cost of common stock shares repurchased during the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Common stock repurchased (in shares) 781 1,065 Common stock repurchased $ 51,608 $ 60,033 Additional stock repurchases were made in connection with employee stock plans, whereby Company shares were tendered by employees for the payment of exercise price and applicable statutory withholding taxes. The number and the cost of repurchases related to employee stock plans made during the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Repurchases related to employee stock plans (in shares) 257 147 Repurchases related to employee stock plans $ 16,708 $ 8,456 The repurchased shares are held in treasury and are presented as if constructively retired. Treasury stock is accounted for using the cost method. Repurchase activity for the three months ended March 31, 2019 and 2018 , (consisting of stock option exercises and the purchase of shares for the treasury) is presented in the unaudited Condensed Consolidated Statements of Stockholders’ Equity.

Net Income Per Share

Net Income Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share The calculation of net income per share for the three months ended March 31, 2019 and 2018 , is reflected in the following table (in thousands, except per share amounts): Three Months Ended 2019 2018 Net income $ 109,798 $ 96,167 Basic: Weighted average shares 117,068 121,934 Diluted: Weighted average shares 117,068 121,934 Dilutive effect of potential common shares 898 953 Diluted weighted average shares 117,966 122,887 Net income per share: Basic $ .94 $ .79 Diluted $ .93 $ .78

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Business Segments	Business Segments The Company has three reportable segments: temporary and consultant staffing, permanent placement staffing, and risk consulting and internal audit services. The temporary and consultant staffing segment provides specialized staffing in the accounting and finance, administrative and office, information technology, legal, advertising, marketing and web design fields. The permanent placement staffing segment provides full-time personnel in the accounting, finance, administrative and office, and information technology fields. The risk consulting and internal audit services segment provides business and technology risk consulting and internal audit services. The accounting policies of the segments are set forth in Note A—“Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 . The Company evaluates performance based on income from operations before net interest income, intangible asset amortization expense, and income taxes. The following table provides a reconciliation of revenue and operating income by reportable segment to consolidated results for the three months ended March 31, 2019 and 2018 (in thousands): Three Months Ended 2019 2018 Net service revenues Temporary and consultant staffing $ 1,084,627 $ 1,066,288 Permanent placement staffing 131,562 121,400 Risk consulting and internal audit services 252,341 207,645 $ 1,468,530 $ 1,395,333 Operating income Temporary and consultant staffing $ 106,018 $ 96,723 Permanent placement staffing 21,557 22,379 Risk consulting and internal audit services 18,654 15,265 146,229 134,367 Amortization of intangible assets 342 463 Interest income, net (1,496 ) (735 ) Income before income taxes $ 147,383 $ 134,639

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On May 2, 2019 , the Company announced the following: Quarterly dividend per share $.31 Declaration date May 2, 2019 Record date May 24, 2019 Payment date June 14, 2019

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations . Robert Half International Inc. (the “Company”) provides specialized staffing and risk consulting services through such divisions as Accountemps ® , Robert Half ® Finance & Accounting , OfficeTeam ® , Robert Half ® Technology , Robert Half ® Management Resources , Robert Half ® Legal , The Creative Group ® , and Protiviti ® . The Company, through its Accountemps , Robert Half Finance & Accounting , and Robert Half Management Resources divisions, is a specialized provider of temporary, full-time, and senior-level project professionals in the fields of accounting and finance. OfficeTeam specializes in highly skilled temporary administrative support professionals. Robert Half Technology provides project and full-time technology professionals. Robert Half Legal provides temporary, project, and full-time staffing of lawyers, paralegals and legal support personnel. The Creative Group provides creative, digital, marketing, advertising and public relations professionals. Protiviti
Basis of Presentation	Basis of Presentation. The unaudited Condensed Consolidated Financial Statements (“Financial Statements”) of the Company are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”). The comparative year-end Condensed Consolidated Statement of Financial Position data presented was derived from audited financial statements. In the opinion of management, all adjustments (consisting of only normal recurring adjustments) necessary for a fair statement of the financial position and results of operations for the periods presented have been included. These Financial Statements should be read in conjunction with the audited Consolidated Financial Statements of the Company for the year ended December 31, 2018
Principles of Consolidation	Principles of Consolidation. The Financial Statements include the accounts of the Company and its subsidiaries, all of which are wholly-owned. All intercompany balances have been eliminated.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. As of March 31, 2019
Advertising Costs	Advertising Costs. The Company expenses all advertising costs as incurred.
Leases	Leases. The Company determines if a contractual arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current operating lease liabilities, and noncurrent operating lease liabilities on the Company’s Condensed Consolidated Statement of Financial Position. The Company does not currently have finance leases.
Internal-use Software	Internal-use Software. The Company capitalizes direct costs incurred in the development of internal-use software. Implementation costs incurred in hosting arrangements are capitalized and reported as a component of other current assets. All other internal-use software development costs are capitalized and reported as a component of computer software within property and equipment.
New Accounting Pronouncements	Recently Adopted Accounting Pronouncements Lease Accounting . In February 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance which changes financial reporting as it relates to leasing transactions. Under the new guidance, lessees are required to recognize a lease liability, measured on a discounted basis; and a right-of-use asset, for the lease term. The Company adopted this guidance as of January 1, 2019, using the transition method that allowed it to initially apply the guidance as of January 1, 2019. The Company elected the package of practical expedients available under the new standard, which allowed the Company to forgo a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of this guidance had a material impact on the Company’s Condensed Consolidated Statement of Financial Position beginning January 1, 2019. Prior periods were not restated. See Note F for further discussion of leases. Internal-use Software — Cloud Computing. In August 2018, the FASB issued authoritative guidance which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. Entities are required to present the expense related to capitalized implementation costs in the same line item in the statement of operations as the fees associated with the hosting elements of the arrangement and classify the payments for the capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. Entities are also required to present the capitalized implementation costs in the statement of financial position in the same line item that a prepayment of the fees of the associated hosting arrangement would be presented. The new guidance is effective for annual and interim periods beginning after December 15, 2019, although early adoption is permitted. The Company has adopted the new guidance prospectively as of January 1, 2019, and the impact of adoption was not material to its financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted Current Expected Credit Losses Model. In June 2016, the FASB issued authoritative guidance amending how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance requires the application of a current expected credit loss model, which is a new impairment model based on expected losses. The new guidance is effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for annual reporting periods beginning after December 15, 2018. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements and related disclosures. Simplifying the Test for Goodwill Impairment.
Commitments and Contingencies	Legal costs associated with the resolution of claims, lawsuits and other contingencies are expensed as incurred.
Treasury Stock	The repurchased shares are held in treasury and are presented as if constructively retired. Treasury stock is accounted for using the cost method. Repurchase activity for the three months ended March 31, 2019 and 2018 , (consisting of stock option exercises and the purchase of shares for the treasury) is presented in the unaudited Condensed Consolidated Statements of Stockholders’ Equity.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Advertising Costs	Advertising costs for the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Advertising costs $ 12,837 $ 13,081
Internal-Use Software Development Costs Capitalized	Internal-use software development costs capitalized for the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Internal-use software development costs $ 5,036 $ 455

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Schedule of Revenue Disaggregated by Line of Business	The following table presents the Company's revenues disaggregated by line of business (in thousands): Three Months Ended 2019 2018 Accountemps $ 483,473 $ 471,589 OfficeTeam 252,035 261,152 Robert Half Technology 171,928 160,062 Robert Half Management Resources 177,191 173,485 Temporary and consulting staffing 1,084,627 1,066,288 Permanent placement staffing 131,562 121,400 Risk consulting and internal audit services 252,341 207,645 Net service revenues $ 1,468,530 $ 1,395,333
Schedule of Contract Liability Activity	The following table sets forth the activity in contract liabilities from December 31, 2018, through March 31, 2019 (in thousands): Contract Liabilities Balance as of December 31, 2018 $ 12,997 Payments in advance of satisfaction of performance obligations 4,604 Revenue recognized (4,374 ) Other, including translation adjustments (2,423 ) Balance as of March 31, 2019 $ 10,804

Other Current Assets (Tables)

Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Current Assets	Other current assets consisted of the following (in thousands): March 31, December 31, 2018 Deposits in trusts for employee deferred compensation plans $ 345,844 $ 311,708 Other 90,162 90,877 Other current assets $ 436,006 $ 402,585

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Components of Property and Equipment	Property and equipment consisted of the following (in thousands): March 31, December 31, 2018 Computer hardware $ 180,456 $ 177,237 Computer software 379,415 378,734 Furniture and equipment 109,060 107,421 Leasehold improvements 161,685 160,521 Other 11,155 10,319 Property and equipment, cost 841,771 834,232 Accumulated depreciation (716,249 ) (709,056 ) Property and equipment, net $ 125,522 $ 125,176

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Supplemental Cash Flow Information	Supplemental cash flow information related to leases consisted of the following (in thousands): Three Months Ended March 31, 2019 Cash paid for operating lease liabilities $ 16,728 Right-of-use assets obtained in exchange for new operating lease liabilities $ 10,517
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases consisted of the following: March 31, Weighted average remaining lease term for operating leases 3.2 years Weighted average discount rate for operating leases 3.4 %
Schedule of Future Minimum Lease Payments	Future minimum lease payments under non-cancellable leases as of March 31, 2019 , were as follows (in thousands): 2019 (excluding the three months ended March 31, 2019) $ 58,082 2020 71,827 2021 55,609 2022 42,738 2023 35,777 Thereafter 52,794 Less: Imputed interest (40,149 ) Present value of operating lease liabilities (a) $ 276,678 (a) Includes current portion of $71.1 million

Accrued Payroll and Benefit C_2

Accrued Payroll and Benefit Costs (Tables)	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Payroll Costs and Retirement Obligations	Accrued payroll and benefit costs consisted of the following (in thousands): March 31, December 31, 2018 Payroll and benefits $ 261,932 $ 263,072 Employee deferred compensation plans 352,161 333,528 Workers’ compensation 18,847 18,251 Payroll taxes 37,405 23,918 Accrued payroll and benefit costs $ 670,345 $ 638,769
Employee Retirement Obligations	Included in employee deferred compensation plans is the following (in thousands): March 31, December 31, 2018 Deferred compensation plan and other benefits related to the Company’s Chief Executive Officer $ 89,434 $ 89,212

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Number and Cost of Common Stock Shares Repurchased	The number and the cost of common stock shares repurchased during the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Common stock repurchased (in shares) 781 1,065 Common stock repurchased $ 51,608 $ 60,033
Number and Cost of Employee Stock Plan Repurchases	The number and the cost of repurchases related to employee stock plans made during the three months ended March 31, 2019 and 2018 , are reflected in the following table (in thousands): Three Months Ended 2019 2018 Repurchases related to employee stock plans (in shares) 257 147 Repurchases related to employee stock plans $ 16,708 $ 8,456

Net Income Per Share (Tables)

Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Calculation of Net Income Per Share	The calculation of net income per share for the three months ended March 31, 2019 and 2018 , is reflected in the following table (in thousands, except per share amounts): Three Months Ended 2019 2018 Net income $ 109,798 $ 96,167 Basic: Weighted average shares 117,068 121,934 Diluted: Weighted average shares 117,068 121,934 Dilutive effect of potential common shares 898 953 Diluted weighted average shares 117,966 122,887 Net income per share: Basic $ .94 $ .79 Diluted $ .93 $ .78

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Reconciliation of Revenue and Operating Income by Reportable Segment to Consolidated Results	The following table provides a reconciliation of revenue and operating income by reportable segment to consolidated results for the three months ended March 31, 2019 and 2018 (in thousands): Three Months Ended 2019 2018 Net service revenues Temporary and consultant staffing $ 1,084,627 $ 1,066,288 Permanent placement staffing 131,562 121,400 Risk consulting and internal audit services 252,341 207,645 $ 1,468,530 $ 1,395,333 Operating income Temporary and consultant staffing $ 106,018 $ 96,723 Permanent placement staffing 21,557 22,379 Risk consulting and internal audit services 18,654 15,265 146,229 134,367 Amortization of intangible assets 342 463 Interest income, net (1,496 ) (735 ) Income before income taxes $ 147,383 $ 134,639

Subsequent Events (Tables)

Subsequent Events (Tables)	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	On May 2, 2019 , the Company announced the following: Quarterly dividend per share $.31 Declaration date May 2, 2019 Record date May 24, 2019 Payment date June 14, 2019

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)segment	Mar. 31, 2018USD ($)
Accounting Policies [Abstract]
Number of reportable segments | segment	3
Advertising costs	$ 12,837	$ 13,081
Internal-use software development costs	$ 5,036	$ 455

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Revenue Disaggregated by Line of Business (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)segment	Mar. 31, 2018USD ($)
Disaggregation of Revenue [Line Items]
Number of reportable segments | segment	3
Guarantee period	90 days
Net service revenues	$ 1,468,530	$ 1,395,333
Accountemps
Disaggregation of Revenue [Line Items]
Net service revenues	483,473	471,589
OfficeTeam
Disaggregation of Revenue [Line Items]
Net service revenues	252,035	261,152
Robert Half Technology
Disaggregation of Revenue [Line Items]
Net service revenues	171,928	160,062
Robert Half Management Resources
Disaggregation of Revenue [Line Items]
Net service revenues	177,191	173,485
Temporary and consulting staffing
Disaggregation of Revenue [Line Items]
Net service revenues	1,084,627	1,066,288
Permanent placement staffing
Disaggregation of Revenue [Line Items]
Net service revenues	131,562	121,400
Risk consulting and internal audit services
Disaggregation of Revenue [Line Items]
Net service revenues	$ 252,341	$ 207,645

Revenue Recognition - Remaining

Revenue Recognition - Remaining Performance Obligation (Details) $ in Millions	Mar. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Aggregate transaction price allocated to performance obligations	$ 84.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue from Contract with Customer [Abstract]
Aggregate transaction price allocated to performance obligations	$ 80.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected duration	12 months

Revenue Recognition - Schedul_2

Revenue Recognition - Schedule of Contract Liability Activity (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Change in Contract with Customer, Liability [Abstract]
Balance as of December 31, 2018	$ 12,997
Payments in advance of satisfaction of performance obligations	4,604
Revenue recognized	(4,374)
Other, including translation adjustments	(2,423)
Balance as of March 31, 2019	$ 10,804

Other Current Assets (Detail)

Other Current Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deposits in trusts for employee deferred compensation plans	$ 345,844	$ 311,708
Other	90,162	90,877
Other current assets	$ 436,006	$ 402,585

Property and Equipment, Net - C

Property and Equipment, Net - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 841,771	$ 834,232
Accumulated depreciation	(716,249)	(709,056)
Property and equipment, net	125,522	125,176
Computer hardware
Property, Plant and Equipment [Line Items]
Property and equipment, cost	180,456	177,237
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, cost	379,415	378,734
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, cost	109,060	107,421
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, cost	161,685	160,521
Other
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 11,155	$ 10,319

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Operating Leased Assets [Line Items]
Option to extend lease term	5 years
Option to terminate lease term	1 year
Operating lease expense	$ 16.6
Minimum
Operating Leased Assets [Line Items]
Remaining lease terms	1 year
Maximum
Operating Leased Assets [Line Items]
Remaining lease terms	10 years

Leases - Lease Cost and Other I

Leases - Lease Cost and Other Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Cash Flow, Operating Activities, Lessee [Abstract]
Cash paid for operating lease liabilities	$ 16,728
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 10,517
Weighted average remaining lease term:
Operating leases (in years)	3 years 2 months 12 days
Operating Leases, Weighted Average Discount Rate, Percent [Abstract]
Operating leases (percent)	3.40%

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2019USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
2019 (excluding the three months ended March 31, 2019)	$ 58,082
2020	71,827
2021	55,609
2022	42,738
2023	35,777
Thereafter	52,794
Less: Imputed interest	(40,149)
Present value of lease liabilities	276,678
Current operating lease liabilities	$ 71,065

Accrued Payroll and Benefit C_3

Accrued Payroll and Benefit Costs (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Payroll and benefits	$ 261,932	$ 263,072
Employee deferred compensation plans	352,161	333,528
Workers’ compensation	18,847	18,251
Payroll taxes	37,405	23,918
Accrued payroll and benefit costs	670,345	638,769
Chief Executive Officer
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation plan and other benefits related to the Company’s Chief Executive Officer	$ 89,434	$ 89,212

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Mar. 31, 2019USD ($)
Credit Agreement | Line of Credit
Loss Contingencies [Line Items]
Credit facility (up to)	$ 100,000,000
Borrowings outstanding	0
Jessica Gentry
Loss Contingencies [Line Items]
Loss contingency	0
Shari Dorff
Loss Contingencies [Line Items]
Loss contingency	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) shares in Millions	Mar. 31, 2019shares
Equity [Abstract]
Maximum number of shares authorized to be repurchased	5.9

Stockholders' Equity - Number a

Stockholders' Equity - Number and Cost of Common Stock Shares Repurchased (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Common stock repurchased (in shares)	781	1,065
Common stock repurchased	$ 51,608	$ 60,033

Stockholders' Equity - Number_2

Stockholders' Equity - Number and Cost of Employee Stock Plan Repurchases (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Repurchases related to employee stock plans (in shares)	257	147
Repurchases related to employee stock plans	$ 16,708	$ 8,456

Net Income Per Share - Calculat

Net Income Per Share - Calculation of Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 109,798	$ 96,167
Basic:
Weighted average shares (in shares)	117,068	121,934
Diluted:
Weighted average shares (in shares)	117,068	121,934
Dilutive effect of potential common shares (in shares)	898	953
Diluted weighted average shares (in shares)	117,966	122,887
Net income per share:
Basic (in usd per share)	$ 0.94	$ 0.79
Diluted (in usd per share)	$ 0.93	$ 0.78

Business Segments - Additional

Business Segments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019segment
Segment Reporting [Abstract]
Number of reportable segments	3

Business Segments - Reconciliat

Business Segments - Reconciliation of Revenue and Operating Income by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Net service revenues	$ 1,468,530	$ 1,395,333
Operating income	146,229	134,367
Amortization of intangible assets	342	463
Interest income, net	(1,496)	(735)
Income before income taxes	147,383	134,639
Operating Segments | Temporary and consultant staffing
Segment Reporting Information [Line Items]
Net service revenues	1,084,627	1,066,288
Operating income	106,018	96,723
Operating Segments | Permanent placement staffing
Segment Reporting Information [Line Items]
Net service revenues	131,562	121,400
Operating income	21,557	22,379
Operating Segments | Risk consulting and internal audit services
Segment Reporting Information [Line Items]
Net service revenues	252,341	207,645
Operating income	$ 18,654	$ 15,265

Subsequent Events - Dividend An

Subsequent Events - Dividend Announced (Details) - $ / shares	May 02, 2019	Mar. 31, 2019	Mar. 31, 2018
Subsequent Event [Line Items]
Quarterly dividend per share (in usd per share)		$ 0.31	$ 0.28
Subsequent Event
Subsequent Event [Line Items]
Quarterly dividend per share (in usd per share)	$ 0.31
Declaration date	May 2, 2019
Record date	May 24, 2019
Payment date	Jun. 14, 2019